package com.neu.question.common.utils;

import java.util.UUID;

/**
 * Created by myz on 2017/7/12.
 */
public class UUIDUtil {

  /**
   * 获取一个UUID
   */
  public static String getOneUUID() {
    //获取UUID
    String s = UUID.randomUUID().toString();
    //去掉“-”符号
    return s.substring(0, 8) + s.substring(9, 13) + s.substring(14, 18) + s.substring(19, 23) + s.substring(24);
  }

  /**
   * 获得指定数目的UUID
   *
   * @param number int 需要获得的UUID数量
   * @return String[] UUID数组
   */
  public static String[] getUUID(int number) {
    if (number < 1) {
      return null;
    }
    String[] ss = new String[number];
    for (int i = 0; i < number; i++) {
      ss[i] = getOneUUID();
    }
    return ss;
  }
}
